Buffing wheel



June 5, 1923. "1,457,807

H. L. ZUCKER BUFFING WHEEL Filed Sept. 26 1921 Patented June 5, 1923. p I I UNITED STATES PATET OFFICE.

HENRY L. ZUCKER, OF MATAWAN, NEW JERSEY, ASSIGNOR TO A. P. MUNNING & (70., OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

BUFFING WHEEL.

Application filed September 26, 1921. Serial No. 508,464.

To all whom it may concern: are held together less closely than the inner Be it known that I, HENRY L. ZUCKER, portions, thus making the .bufiing face of a a citizen of the United States, residing at full sized wheel of less natural density than Matawan, in the county of Monmouth and that of the same wheel when worn smaller; State of New Jersey, have invented a certherefore, as the wheel wears away in use, tain new and useful Buffing \Vheel, of which the stiffening or compacting effect due to the following is a specification. centrifugal force decreases, but the natural The invention relates particularly to buffdensity of the cutting surface increases, and ing or polishing wheels built up from pieces the resultant density of cutting surface mag of flexible fabric such as muslin, canvas, be maintained substantially constant for a flannel or other material used for this purdiameters. pose. Wheels of the above nature often are In the illustrated form of the invention, made of large diameter and are operated the fabric pieces are bound together by at high speed, with the result that the cenmeans of stitching 2 which extends through trifugal force on the portions of the fabric the wheel from side to side, and which W111 making u the bufling face is suflicient to Wear away together with the fabric as the stifl'en an compact the cutting surface into wheel is used. The stitches are spaced 9. art a more dense and hard condition. But as further at the outer region of the wheel t an the periphery of the wheel wears away with at the inner region thereof, as ma be accontinued use, the linear speed of the cutcomplished conveniently by extending the ting surface becomes much less, such cutstitching spirally around the center of the ting surface is less stiffened or compacted, wheel and spacing the turns of the spiral and the finish obtained by a small, worn a greater distance apart as the diameter wheel, may vary from that secured by a new, of the turns increases. Before the largest full sized Wheel of the same kind. turn of the spiral has worn away, the edges The invention has for an object to proof the fabric which form the cutting surface vide a buflin wheel of the above character of the wheel will be comparatively loose in which, as t e wheel periphery wears away, when the wheel is at rest, but when the wheel the quality or density of the bufling surface is turning at a high velocity the centrifunevertheless will remain substantially unigal force will tend to stiffen-or straighten 86 form. out the fabric edges into a more compact Further objects and advantages of the inand dense condition. As the wheel wears vention will be in art obvious and in part away the turns of the stitching are spaced specifically pointed out in the description apart less and less, and thus the avera e hereinafter contained, which, taken in conlength of the cutting edges of the fabric 90 nection with the accompanying drawings which project beyond the outermost turn discloses a preferred embodiment thereof; of the stitching, ecomes less, or, in other such embodiment, however, is to be conwords, the edges of the fabric are held tosidered merely as illustrative of its pringether more closely by the stitching, tendci le. In the drawings: ing to make the cutting surface of the wheel ig. 1 is a plan view of a buifing wheel more dense. On the other hand, the linear made in accordance with the invention. velocity of the cutting surface is substantial- Fig. 2 is a cross sectional view of the 1y smaller than at the periphery of the fullwheel shown in Fig. 1. sized wheel, so that the stifl'ening effect of The invention is disclosed as applied to centrifugal force is less. Thus by spacing a bufling wheel made up of pieces or lamithe stitches distances approximately inversenations 1 of flexible fabric, which pieces in ly proportional to their radial distances the present instance are in the form of comfrom the wheel center, the increase in denplete circles, held or bound together in such sity of the cutting surface due to the closemanner that the binding means will wear ness of the stitchlng, may be made to comaway with the fabric until the'major porpensate for the decreased density due to tion of the wheel has been consumed. reduction of the centrifugal force as the According to the present invention, the Wheel wears away, and the density of the outer portions of fabric, or those portions cutting surface may be maintained substanwhich travel at relatively high linear speed, tially constant.

iii

The bufiing wheel shown in Fig. 1 is designed to be discarded or put to different use after it has worn away to the point 3, and therefore the stitching inside of that point is not illustrated as spaced in accordance with the invention.

The spacing of the turns of the spiral stitching, as lndicated on the drawing, is intended to show approximately proportions satisfactory for a wheel of 16 inches diameter adapted to be worn away to a diameter of 7 inches on the same class of work.

While a specific embodiment of the invention has been described, it is obvious that many changes may be made therein without departing from the spirit of the invention as defined in the following claims.

I claim:

1. A bufiing wheel made up of fabric pieces, and means for binding the pieces together more closely at the inner region of the wheel than at the outer region thereof.

2. A buffing wheel made up of fabric pieces, and means for binding the pieces together at diiferent portions of the wheel to an extent substantially inversely proportional to the radial distances of such portions from the wheel centre.

3. A bufling wheel made up of fabric pieces, and stitches for binding the pieces together, adjacent stitches at the outer region of the wheel being radially spaced apart a distance greater than the stitches of the inner portion of the wheel.

4. A butting wheel made up of fabric pieces, and stitches for binding the pieces together, the stitches at different portions of the wheel being spaced apart radially, distances substantially inversely proportional to the radial distances of such portion from the wheel centre.

5. A butting wheel made up of fabric pieces, and means for binding the pieces together comprising stitching extending spirally about the centre of the wheel, the turns of the spiral being spaced apart distances increasing toward the periphery of the whee In testimony that I claim the foregoing, I have hereunto set my hand this 13th day of June, 1921.

HENRY L. ZUOKER. 

